557 adder-tt09
557 : adder-tt09
- Author: Philip Solomatnikov
- Description: 4bit adder with a carry output
- GitHub repository
- View in Wokwi
- Clock: 0 Hz
How it works
The entire thing is based off of this image, so all credit to them. Uses XOR, AND, & OR gates for the entire thing.
Inputs
- 0. - A0
- 1. - B0
- 2. - A1
- 3. - B1
- 4. - A2
- 5. - B2
- 6. - A3
- 7. - B3
Outputs
- 0. - Sum 0
- 1. - Sum 1
- 2. - Sum 2
- 3. - Sum 3
- 4. - Carry
How to test
Take 2 4-bit arrays and then feed them in in the following order:
- For array 1, write to A<count>
- For array 2, write to B<count>
External hardware
LEDs from Sum 0-3 for display. Switches from A0-3 and B0-3.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | in0 | out0 | |
| 1 | in1 | out1 | |
| 2 | in2 | out2 | |
| 3 | in3 | out3 | |
| 4 | in4 | out4 | |
| 5 | in5 | ||
| 6 | in6 | ||
| 7 | in7 |